Complete dataset with all info for gun control

To quantify how strict are gun controls in different states, we are using:

Numerical variables

variable type complete mean missing n p0 p100 p25 p50 p75 sd
application_rate numeric 50 0.1 0 50 0.0 1.0 0.1 0.1 0.1 0.1
approval_rate numeric 50 0.0 0 50 0.0 0.0 0.0 0.0 0.0 0.0
crude_rate numeric 50 13.2 0 50 3.6 23.9 10.3 12.5 17.3 4.9
death_rate numeric 50 13.0 0 50 3.4 23.0 9.7 12.8 17.4 4.9
death_rate_rank integer 50 25.5 0 50 1.0 50.0 13.2 25.5 37.8 14.6
deaths numeric 50 771.0 0 50 49.0 3353.0 206.0 564.0 1048.2 745.9
law_strength integer 50 25.4 0 50 1.0 50.0 13.2 25.5 37.0 14.5
number_of_background_checks numeric 50 498647.7 0 50 12742.0 4641480.0 129223.0 299839.0 534990.5 720686.3
number_of_federal_firearms_licensees numeric 50 2718.7 0 50 246.0 10920.0 1228.0 2247.5 3566.0 2111.0
number_of_residents_in_millions numeric 50 6.5 0 50 0.6 39.5 1.8 4.6 7.3 7.3
population numeric 50 6448926.9 0 50 585501.0 39250017.0 1850105.5 4559320.0 7198767.8 7271769.1
state_code numeric 50 29.3 0 50 1.0 56.0 17.2 29.5 41.8 15.8
year numeric 50 2016.0 0 50 2016.0 2016.0 2016.0 2016.0 2016.0 0.0

Categorical variables

variable type complete empty max min missing n n_unique ordered
death_cause character 50 0 7 7 0 50 1 NA
grade_2017 factor 50 NA NA NA 0 50 5 0
state character 50 0 14 4 0 50 50 NA
state_abb.x character 50 0 2 2 0 50 50 NA
state_abb.y character 50 0 2 2 0 50 50 NA

As we can see, the dataset has no missing data. All the information, including population statistics, background check / applications statistics, approved licensees statistics, are generalized for different states (except for D.C.).

Approved license vs. law strength

The first plot show the relationship between the percentage of people get approved for gun licenses, mortality rate and the law strength in each state.

As we can see in this plot, in different states, the percentage of people get approved for gun licenses is positively connected with law strength. This is intuitive because it’s easier to get approved for guns in states with less strict gun laws. Also, with less strict gun laws, states generally have higher mortality rate. An regression model is built to further explain this relationship in model panel.

Application for guns vs. law strength

The second plot shows the relationship application percentage (proportion of people applying for the license in total population), mortality rate and the law strength.

As we can see in the plot,